Term invented in Soviet Russia to describe people who blindly supported the likes of Lenin and Stalin while they committed atrocity after atrocity.

Today, it refers to brainwashed liberals and leftists the world over (usually college students that aren't necessarily idiots, but just misinformed, naive, and ignorant of facts due to being indoctrinated with liberal/socialist propaganda through their public education) who believe that George W. Bush has committed more crimes against humanity than leftist darlings like Saddam Hussain, Yasser Arafat, and Osama Bin Laden, and still defend Communism, the cause of over 100 million deaths to this day.

Hundreds of useful idiots gathered at their college campus to burn American flags, pass out Communist pamphlets that apologize for Stalin and Mao, and to pledge support to their hero, Saddam Hussain.

Useful idiots need to be shown the facts, mainly that the United States and Israel are the greatest defenders of freedom and justice in the world. Until then, rational people can have fun laughing at their ignorance.

If you have never heard the term “useful idiot” it was the attitude held by Vladimir Lenin towards communist sympathizers in the West (America). While Lenin and the Soviets held them in utter contempt they also viewed them as tools for dispensing communist propaganda to other countries, thus infecting foreign cultures with their totalitarian tripe. After their mission was complete, they were no longer “useful.”

It's a term the refers to brainwashed American marxists who blindly support any ideology that gets themselves out of real work and causes others to pay their way.

it also refers to useful idiots who post inaccurate definitions of the term useful idiot on sites like the urban dictionary. while they believe that they are making some sort of statement, they are actually providing perfect examples of the term.

Unthinking proponents of socialism and/or communism.
You can usually find them swarming the internet, participating in riots to promote tolerance, attempting to think up questions for themselves to answer, or sitting in Starbucks with their friends discussing the failings of capitalism over a light frappuccino.

Karl Marx described "useful idiots" as people who carry the Marxist ideals throughout a society or country itself, but this term can apply to anyone who believes in useless political ideals. Many young college students are bought and sold by liberal/socialist ideals like no-gun laws will stop crime in its tracks, heavy government control in our life is a good thing, and universal healthcare will solve all issues. They can be considered useful idiots because other countries around the world have proved these ideas horribly wrong, however they still blindly follow their leaders who say those things. Useful idiots believe they are fighting for "good" causes, but do not have the ability to think for themselves. If they would actually sit and think things out for a few minutes, they would realize how bad their ideas really are.

"My adherents are useful idiots." -Karl Marx

Person 1: America needs socialized medicine because thousands of people can't get healthcare, and socialized medicine will solve that issue!

Person 2: No it won't, the hospitals will just become so filled that LESS people will get help, and more people will die from curable diseases! Countries like Cuba and the U.K. have already proved this!

Person 1: No, it works! You're just a hatemonger of the poor! It works in other countries and it will work here!

Person 2: Ugh! What's the use of arguing this? You're just another useful idiot.